Motor-driven rural mail-car.



AvT. KELSEY.

MOTOR DRIVEN RURAL MAIL CAR.

APPLICATION mum JUNE 23, 1914.

1,1 15,207. Patented Oct. 27, 1914.

3 SHBETS-SHBBT 1.

Aaron Tfiels'g WMOE W- SY 9 w t THE NORRIS PETERS C0. PHOTO-M17411. WASHINGTON. D C.

A. T. KELSEY.

MOTOR DRIVEN RURAL MAIL GAR.

APPLICATION IILBD JUNE 23,1914.

1, 1 1 5 ,207 Patented Oct. 27, 1914.

3 SHEETS-SHEET 2.

LIL LPL'L Aaron Tlfebsg THE NORRIS PETERS c0 PHOTO-urnm, WASHINGTON, D. c.

A. T. KELSEY.

MOTOR DRIVEN RURAL MAIL CAB.

APPLICATION FILED JUNE 23, 1914.

Patented Oct. 27, 1914,

3 SHEETS-SHEET 3.

3% Tifelsgy Aararr VII/IIIIIIIIIIIIIIIIIIIA THE NORRIS PETERS (30.. PHUTO-LITMO.. WASHINGTON. D. C.

rrion.

AARON THOMAS KELSEY, OF ST. CHARLES, llfINNESOTA.

IVIOTQB-DRIVEN RURAL MAIL-CAR.

To all whom it may concern Be it known that I, AARON T. KnLsnY, a

citizen of the United States, residing at St. Charles, in the county of Winona and State of Minnesota, have invented certain new and useful Improvements in Motor-Driven Rural Mail-Cars; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in motor driven mail delivery apparatus, the object in view being to produce a mail carrying car in which a storage battery is mounted and adapted to drive the car and in the provision of means for automatically stopping the car at predetermined stations. I

The invention comprises various details of construction, combinations and arrange ments of parts, which will be hereinafter fully described, shown in the accompanying drawings and then specifically defined in the appended claims.

My invention is illustrated in the accom panying drawings, in which Figure 1 is a side elevation of a section of a mail delivery line and car mounted thereon. Fig. 2 is an enlarged detail view of the car, the casing being shown in section. Fig. 3 is a top plan view, the casing being in section. Fig. 4 is a sectional view on line 44 of Fig- 3, and Fig. 5 is an end view of a portion of the car.

the drawings by numeral, 1 designates a track suspended from the cable 2, and 3 designates the car which has wheels 4 JOurnaled in suitable bearings therein and which ride upon the track 1. A dynamo motor 5 is mounted within the car, and 6 designates a storage battery for supplying current to the motor. Fixed to the shaft 7 of the dynamo is a pulley 8 about which and a pulley 9 a belt '10 passes, forming means for transmitting power to drive one of the wheels 4. Projecting at intervals from the track, wherever it is desired to cause the car to automatically stop, are the pins 11.

A rack, designated by numeral 12, is pivotally mounted upon a shaft 13 and has a Specification of Letters Patent.

Reference now being had to the details of- Patented Oct. 27, 1914.

* Application filed June 23, 1914. Serial No. 846,857.

lever 14 projecting from the upper edge thereof which is adapted to contact with various pins 11 when it is desired to cause the motor to be automatically stopped. A spring 13 is fastened at its lower end and its upper end is bent to form a circle 15 pass ing about the lever 14, the purpose of said spring being to normally return the lever 14 to its position after being tilted by coming in contact with one of the pins 11. The shaft 13 has fixed thereto a pawl 16 which is pivotally connected through the medium of the link 17 with an arm 18 and fastened to the shaft 19, and a crank arm 20 is fastened to the shaft 19 and to which crank arm 20 the bar 22 is connected which has, as shown in Fig. 20f the drawings, a cam end 23 adapted to engage the crank shaft 24, as shown in the plan view, Fig. 3. The crank shaft 24 is journaled in bearings in the frame of the apparatus. A lever 25 is ivotally mounted upon a pin 26 upon the i oor of the frame and rests against a crank 27 of said crank shaft 24, as shown clearly in Figs. 2 and 3 of the drawing, and which lever 27 is adapted, as the crankshaft is rocked, to move from the position shown in solid lines in Fig. 2 to that shown in dotted lines in the same figure.

A bar 28, having a hooked end 29, is pivotally connected at 30 to a bar 31 which in turn is pivotally mounted upon a pin 32 projecting from the face of the disk 34, mounted upon the shaft 35 and which disk is provided with a notch 36 engaged by the pawl 16. A spring motor wheel 37 has fixed thereto a gear wheel 38 and upon which is a governor mechanism 39 of any suitable type, said gear wheel 38 meshing with a pinion 40 and a gear wheel 41 upon the shaft 35 transmits movement to the escapement wheel 42.

Upon reference to Fig. 3 of the drawings will be seen two terminals, designated by numerals 47and 48, and 49 is a switch which is adapted to be thrown into contact with the terminal 47 which latter is connected through the wire 50 with the terminal 51, the second terminal 52 having connection through the wire 53 with the terminal 48. A link 54 is pivotally connected at one end to the switch 49 and its other end to the lever 25 near its lower end.

The operation of my invention will be readily understood and is as follows: The car being driven by power generated within the car will; move upon the track 1 until the upper end of the lever ll comes in contact with a pin 11, which will cause the lever 14L and the rack to which the same is attached to tilt, which movement will throw the bar 22 having the cam end so that the shoulder upon said cam end will engage over the crank shaft 24. The same tilting movement of the lever and rack will, through the medium of the crank arm 18 and link connecting the same with the pawl, cause the latter to be raised out of the notch 36, allowing the spring-actuated escapement mechanism to operate. Immediately after the lever llhas passed by the finger 11, the spring 13 will cause the lever to be quickly returned to its starting position and the cam end of the bar 22 will cause the crank shaft 24- to rock when the crank 27 against which the lever 25 bears will be thrown from the position shown in solid lines in Fig. 2 to that shown in dotted and, by reason of the lever 25 be 'lng connected through the medium of the rod 5% with the switch, the latter will be thrown to an open position, thus stopping the motor. When the wheel 87 shall have made a complete revolution, the speed of the wheel being regulated by any suitable governor mechanism, the pawl 42 will again engage the notch 36 upon the escapement wheel and the pitman rod 31 will, through its connections with the bar having an angled end 29, cause the lever 25 to be drawn back to the position shown in solid lines in Fig. 2 and with it the switch will be thrown to the position shown in Fig. 3 ofthe drawings, thus closing the circuit and causing the motor to again start and propel the car forward to another station, the various stations being determined each by an integral pin ll.

By the provision of an apparatus embodying the features of my invention, it will be noted that a motor driven rural mail car is provided so constructed that the car will automatically stop at a station and, after an interval, start again and stop automatically whenever a pin projects from the track against which the lever upon the car is adapted to contact.

What I claim to be new is 1. A motor mail delivery car apparatus comprising a track with a projection there-' on, wheels mounted upon the track, a motor, gear connections between the same and one of said wheels for driving the same, a spring pressed escapement controller wheel, a notched disk rotating with the latter, a crank shaft journaled in the frame of the apparatus, a swinging rack, a lever fastened to the rack and disposed in the path of said projection upon the track, a pawl movable with the rack and adapted to engage the notched dish, a cam bar actuated by the lever and adapted to rock the crank shaft when the latter returns to its normal position, an electrical switch, means for operating the same as said crank shaft is rocked in one direction, and means for automati cally returning the switch to a closed position. 1

.2. A motor mail delivery car apparatus comprising a track with a projection thereon, wheels mounted upon the track, a motor, v

gear connections between the same and one a notched disk rotating with the latter, a crankshaft ournaled 1n the frame of the to the rack and disposed in the path of said projection upon the track, a pawl movable with the rack and adapted to engage the notched disk, a cam bar actuated by the lever and adapted to rock the crank shaft when the latter returns to its normal position, an electrical switch, a second lever, pivotal connections between the same and the switch and positioned in the path of one of the cranks ofthe crank shaft, designed to be actuated as the crank shaft rocks, and

returning the of said wheels for driving the same, a spring-pressed escapement controller wheel,

a i aaratus a swin in rack a lever fastened crank shaft journaled in the frame of the apparatus, a swinging rack, a lever fastened to the rack and disposed in the path of said projection upon the track, a pawl movable with the rack and. adapted to engage the notched disk, a cam bar actuated by the lever and adapted to rock the crank shaft when the latter returns to its normal position, an electrical switch, a second lever, pivotal connections between the same and the switch and positioned in the path of one of the cranks of the crank shaft, designed to be actuated as the crank shaft rocks, means for automatically returning the switch to a closed position, and a rod pivotally connecting said second referred to lever and switch.

4. A motor mail delivery car apparatus,

comprising a car, a dynamo motor thereon,

a switch for starting and stopping the motor, a track upon which the car travels, a pin projecting from the sideofthe track, a rack pivotally mounted upon a car and having a lever projecting therefrom in the path of said pin, a spring-actuated escapement regulated disk with a notch in the circumend adapted to engage said second referred to lever, a pitman connecting said hooked bar to a pin upon the notched disk, and means intermediate the second referred to lever and switch for automatically throwing thesame. 1

5, A motor mail delivery car apparatus, comprising a car, a dynamo motor thereon, a switch for starting and stopping the motor, a track upon which the car travels, a pin projecting from the side of the track, a rack pivotally mounted upon a car and having a lever projecting therefrom in the path of said pin, a spring-actuated escapement regulated disk with a notch in the circumference thereof, a pawl movable with said lever and adapted to engage said notch, a cam bar, a

crank shaft adapted to be engaged by said cam bar, a second lever pivoted upon the frame and positioned in contact with the crank shaft, a rod having a hooked end adapted to engage said second referred to lever, a pitman connecting said hooked bar to a pin upon the notched disk, a rod pivotally connecting said second referred to lever and switch.

In testimony whereof I hereunto afiix my signature in presence of two Witnesses.

AARON THOMAS KELSEY. WVitnesses:

HENRY O. CHRISTENSEN, EDITH I. KELSEY.

Copies 01' this patent may be obtained for five cents each,

by addressing the Commissioner of Patents Washington, D. 0." 

